<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <title>Document</title>
</head>

<body>
    <div id="app">
        <div v-text="num"></div>
        <button v-on:click="handle">点击1</button>
        <button @click="handle">点击2</button>
    </div>
    <script src="../vue.js"></script>
    <script>
        var vm = new Vue({
            el: '#app',
            data: {
                num: 0,
            },
            methods: {
                handle: function() {
                    this.num++;
                    console.log(this);
                },
            },
        });
    </script>
</body>

</html>